Current configuration:
IBM 2171-585 Aptiva w/150 watt pwr spply and a Number Nine S3 Savage 4 video card w/8mb (AGP Slot)(Win 98).

Where can I find out which of the "newer" video cards will work with the above configuration? I do know that some of the newer boards require a larger power supply.

Hi, you can start here:
http://www-306.ibm.com/pc/support/site.wss/MIGR-48J225.html

IBM has great support, so if you call them, they can tell what type of video card will work for your system.

Thanks but have been there and since my machine is out of warranty they are going to want $$$ to talk to me.